Apparatus for filtering and compressing liquid-suspended colors into pulp



(ModeL) V I H.R.-HA-VEN. APPARATUS FOR RIN AND OMBRESSING LIQUID-SUSPENDED- COLORS INTO" PULP. No. 249,348..

Patented N W.

N PETERS PlluXwLilllogmphcr, Wnsh'mgiom ac UNTTED STATES PATENT Erica.

HENRY HAVEN, OF OHAMBERSBURG, ASSIGNOR TO THE TRENTON IRON COMPANY, OF TRENTON, NEW J ERSEY.

. APPARATUS FOR FILT'ERING AND COMPRESSING LlQUlD-SUSPENDED COLORS INTO PULP.

. SPECIFICATION forming part of Letters Patent No. 249,348, dated November 8,1881.

Application filed April 30, 1881. (Model) To all whom it may concern:

.Be it known that I, HENRY It. HAVEN, of Chambersburg, New Jersey, have invented an Improvement in Apparatus for Filtering and Compressing Liquid-Suspended Colors into Pulp, of which thefollowing is a specification.

My invention relates to the obtaining in a dry or pulpy state of coloring-matters previously held in solution.

By myinvention the heretofore separate operations of filtering and pressingare conducted in one'and the same apparatus, thereby dispensing altogether with the use of drainingtubs, and very much increasing the facility and I 5 rapidity with which the pulp may be obtained,

"the liquid-suspended color being pumped into a combined press and filtering apparatus of such construction as to insure the rapid and thorough carrying out of the combined filtering and pressing operation.

In the accompanying drawings I have represented an apparatus conveniently adapted to carry into effect my invention, in which- Figure 1 represents such apparatus in longi- 2 5 tudinal side elevation. Fig. 2 is a top-plan view, partially in section, of the combined press and filter of the same. Fig. 3 is an end view of the press and filter of Fig. 2, taken on the line a a. of said Fig. 2, viewed from the right- 0 hand side, and Fig. 4is a-view in perspective of a form of bag which I find it convenient to employ.

Similar letters of reference indicate corresponding parts.

In the accompanying drawings, A represents a tank or vat, in which is contained coloringinatter suspended in liquid, or liquid suspended colors, so called.

B is a combined press and filter, consisting 4o primarily of a frame-work O, constituted by means of end vertical uprights and horizontal longitudinal clamping-bolts, and arranged to contain and be clamped upon 'a given series of transverse vertically-placed fluted or corrugated boards, D,made with rims or edges E surroundingthem projecting on both sides, and placed atright angles to the plane of the boards in such manner that when a series of these boards are placed together side by side there from out or into the inclosed chambers formed 6o Y thereby are through orifices G and outlets H, respectively, formed partially in each of the tops and bottoms of the edges of the boards.

Within each of these chambers are placed composite bags 1t, formed of pieces of canvas folded from the top with the edges downward and with the bottoms and sides overlapped, substantially of the form represented in Fig. 4, which form an inner lining to the chamber. Connected with each of these canvas bags, pref- 7o erably a little to one side of the middle of the top, is a short curved iron pipe, I, one of which is entered within each one of the orifices Gr at the time that the boards and inclosed bags are set up together in the frame, and previous to their being clamped together. These pipes are each provided with cocks J, and at their upperends with union-joints K, by means of which they are connected each to a manifold, L, extending longitudinally above the central top portion of the frame-work, whereby connection is made between the manifold and the interior of the bags in each of the chambers. The manifold has two pipes leadingfrom it, one, M, to a pump, S, having a suction-pipe, 0, connected 8 5 tothe tank or vat A, in which is the liquid-suspended color at or near the bottom, and the other pipe, 1?, leading to the top of the tank. T0 the last-named pipe, at some convenient point between the tank and the tie which joins 0 the manifold with the pipe leading to the pump, is attached a safety-valve, Q, which is set so as to open at a predetermined pressure.

Such beingv the construction of a good form of apparatus, its operation is as follows: The 5 boards are clamped tightly together in the frame-work, the canvas bags being first folded in place within the inclosed chambers, their curved iron pipes attached by means of the unions to the manifold, and their cocks opened, and the pump is then set into operation. By

' the action of the pump the liquid which holds the color in suspension is sucked from the tank to the manifold, and thence is distributed, under pressure, through the curved pipes into the several canvas bags within the chambers. Under a continuance of the pumping operation the bags are soon filled and distended until they press tightly against the sides and edges of the chambers, and the liquid is expressed through the pores of the canvas and separated from the coloring-matter, (the vehicle of which into the bag it has been.) so that it drains down the vertical corrugations through the out-lets into a collecting-tub or drain situated beneath the press. The pressure in the manifold andchalnbers increases as the pulp in the bags becomes more dense until such pressure reaches a degree beyond which it is not safeto carry it, and I the safety-valve is so set that it will open at this from the manifold by theloosening ofthe unions of their pipes, and the frame-work which binds the boards together is unset so that the boards may be drawn aside one by one and the can-- vas bags with their contained pulp removed. The folds which have formed the canvas into bags are then unfolded and the pulp contained therein is removed in large cakes. The apparatus is then to be replaced in its former position and the operation repeated until the entire contents of the vat have been treated.

Having thus described my invention, I claim- The improved color press and filter hereinbefore described which consists of the combination of a vat for containingliquid-suspended colors, a combined pressing and filtering apparatus, and a pump adapted to suck the liqhid-suspended color from the vat and distribute it, under pressure, into .the filtering and pressing apparatus, substantially as and for the purposes set forth.

In testimony whereof I have hereunto signed my name this 22d day of April, A. D. 1881.

HENRY R. HAVEN.

In presence of- EAGLETON HANSON, WM. HnwrLL. 

